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ilo: reset SO write offsets for new SO targets

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When the SO targets are changed and no appending is requested, we need to send
SOL_RESET on GEN7+.
This commit is contained in:
Chia-I Wu 2013-04-29 07:26:37 +08:00
parent 68e1f76e46
commit d26f70e208
1 changed files with 15 additions and 6 deletions
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21
src/gallium/drivers/ilo/ilo_3d_pipeline.c
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@ -219,16 +219,25 @@ ilo_3d_pipeline_emit_draw(struct ilo_3d_pipeline *p,
const struct pipe_draw_info *info,
int *prim_generated, int *prim_emitted)
{
const bool so_enabled = (ilo->stream_output_targets.num_targets > 0);
bool success;
/*
* We keep track of the SVBI in the driver, so that we can restore it when
* the HW context is invalidated (by another process). The value needs to
* be reset when the stream output targets are changed.
*/
if (ilo->dirty & ILO_DIRTY_STREAM_OUTPUT_TARGETS)
if (ilo->dirty & ILO_DIRTY_STREAM_OUTPUT_TARGETS &&
so_enabled && !ilo->stream_output_targets.append_bitmask) {
/*
* We keep track of the SVBI in the driver, so that we can restore it
* when the HW context is invalidated (by another process). The value
* needs to be reset when stream output is enabled and the targets are
* changed.
*/
p->state.so_num_vertices = 0;
/* on GEN7+, we need SOL_RESET to reset the SO write offsets */
if (p->dev->gen >= ILO_GEN(7))
ilo_cp_set_one_off_flags(p->cp, INTEL_EXEC_GEN7_SOL_RESET);
}
while (true) {
struct ilo_cp_jmp_buf jmp;
int err;